| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 109 |
4.6%
|
| 2 | 12 years old | 628 |
26.5%
|
| 3 | 13 years old | 625 |
26.4%
|
| 4 | 14 years old | 649 |
27.4%
|
| 5 | 15 years old | 258 |
10.9%
|
| 6 | 16 years old | 75 |
3.2%
|
| 7 | 17 years old or older | 24 |
1%
|
| Sysmiss | 63 |